21052280

素因数分解:

$2^3\times 5^1\times {\mathrm{526307}}^1$

素因数の和:526318

約数の個数: 16

約数和(自身を含む): 47367720

約数和(自身を除く): 26315440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526307, 1052614, 2105228, 2631535, 4210456, 5263070, 10526140, 21052280]

約数ペア:

[(1, 21052280), (2, 10526140), (4, 5263070), (5, 4210456), (8, 2631535), (10, 2105228), (20, 1052614), (40, 526307)]